Register with Paid Product Testing and complete your profile, and you can opt in to product trials. They then send you free products from different companies and when you give your feedback on the products they also pay you in points, which you can exchange for vouchers. They have very regular product trials. For instance at the moment they are looking for people to test dog food (on their dog, obviously!) and also for people to try some Ryvita mini snacks. Not only do you get to keep the products but you get paid for it as well! Definitely a win win. It's a bit like Clicks Research in the way it works, although Paid Product Testing also offers survey opportunities as well, and pays better.